Title (en)

CUTTING ELEMENTS LEACHED TO DIFFERENT DEPTHS LOCATED IN DIFFERENT REGIONS OF AN EARTH-BORING TOOL AND RELATED METHODS

Title (de)

AUF UNTERSCHIEDLICHE TIEFEN IN VERSCHIEDENEN REGIONEN GELAUGTE SCHNEIDELEMENTE EINES ERDBOHRMEISSELWERKZEUGS UND ZUGEHÖRIGE VERFAHREN

Title (fr)

ELÉMENTS DE COUPE LIXIVIÉS À DIFFÉRENTES PROFONDEURS DANS DIFFÉRENTES RÉGIONS D'UN OUTIL DE FORAGE, ET PROCÉDÉS ASSOCIÉS

Publication

EP 2961912 A1 20160106 (EN)

Application

EP 14757765 A 20140228

Priority

• US 201313783118 A 20130301
• US 2014019380 W 20140228

Abstract (en)

[origin: US2014246251A1] Earth-boring tools may comprise a body comprising a first region and a second region. The first region may be located closer to a rotational axis of the body than the second region. A first cutting element may be located in the first region and a second cutting element may be located in the second region. A first polycrystalline table of the first cutting element may be substantially free of catalyst material to a first depth and a second polycrystalline table of the second cutting element may be substantially free of catalyst material to a second, greater depth.

IPC 8 full level

E21B 10/46 (2006.01)

CPC (source: EP RU US)

E21B 10/567 (2013.01 - EP RU US); E21B 10/5735 (2013.01 - EP)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

US 2014246251 A1 20140904; US 9650836 B2 20170516; CN 105008654 A 20151028; CN 105008654 B 20170908; EP 2961912 A1 20160106; EP 2961912 A4 20161207; EP 2961912 B1 20180711; RU 2015141524 A 20170406; RU 2658689 C2 20180622; SG 11201506795Y A 20150929; WO 2014134428 A1 20140904

DOCDB simple family (application)

US 201313783118 A 20130301; CN 201480011673 A 20140228; EP 14757765 A 20140228; RU 2015141524 A 20140228; SG 11201506795Y A 20140228; US 2014019380 W 20140228